（kairo）- Japanese hand warmer
Keep yourself warm in winter
Have you ever seen kairo? This is a Japanese hand warmer. Japan has four seasons and also we have a winter. Japan’s winter is very cold, so people keep off the cold with kairo! There are two types of kairo. One is adhesive and the other is disposable type. For adhesive one, we cover it over the clothes, for example, for the belly, the back, lower back, and the sole of a foot. Iron powder is in it and it react to oxygen, and then it’ll get warmer. (＊It’s dangerous, so do not open or apply it directly to your skin.) In these days, there are lot of characters’ kairo. If you use this, you can enjoy and pass the cold winter!